JPS55121774A - Telephone communication system - Google Patents
Telephone communication systemInfo
- Publication number
- JPS55121774A JPS55121774A JP2933879A JP2933879A JPS55121774A JP S55121774 A JPS55121774 A JP S55121774A JP 2933879 A JP2933879 A JP 2933879A JP 2933879 A JP2933879 A JP 2933879A JP S55121774 A JPS55121774 A JP S55121774A
- Authority
- JP
- Japan
- Prior art keywords
- message
- dual
- key
- transmitted
- tone multi
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M11/00—Telephonic communication systems specially adapted for combination with other electrical systems
- H04M11/06—Simultaneous speech and data transmission, e.g. telegraphic transmission over the same conductors
- H04M11/066—Telephone sets adapted for data transmision
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2933879A JPS55121774A (en) | 1979-03-15 | 1979-03-15 | Telephone communication system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2933879A JPS55121774A (en) | 1979-03-15 | 1979-03-15 | Telephone communication system |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS55121774A true JPS55121774A (en) | 1980-09-19 |
Family
ID=12273442
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2933879A Pending JPS55121774A (en) | 1979-03-15 | 1979-03-15 | Telephone communication system |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS55121774A (ja) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6291061A (ja) * | 1985-10-16 | 1987-04-25 | Sony Corp | 電話装置 |
JPS6326150A (ja) * | 1986-06-30 | 1988-02-03 | ウォング・ラボラトリ−ズ・インコ−ポレ−テッド | 遠隔デ−タ問合せのための携帯用通信端末 |
FR2616989A1 (fr) * | 1987-06-19 | 1988-12-23 | Sony Corp | Visiophone |
JPH028256U (ja) * | 1988-06-28 | 1990-01-19 |
-
1979
- 1979-03-15 JP JP2933879A patent/JPS55121774A/ja active Pending
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6291061A (ja) * | 1985-10-16 | 1987-04-25 | Sony Corp | 電話装置 |
JPS6326150A (ja) * | 1986-06-30 | 1988-02-03 | ウォング・ラボラトリ−ズ・インコ−ポレ−テッド | 遠隔デ−タ問合せのための携帯用通信端末 |
FR2616989A1 (fr) * | 1987-06-19 | 1988-12-23 | Sony Corp | Visiophone |
DE3820586A1 (de) * | 1987-06-19 | 1988-12-29 | Sony Corp | Bildtelefonsystem |
DE3820586C2 (de) * | 1987-06-19 | 2000-12-21 | Sony Corp | Bildtelefonsystem |
JPH028256U (ja) * | 1988-06-28 | 1990-01-19 |
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